What's the difference between a traditional air compressor and a nitrogen compressor?

air compressors commonly used now are divided into oil piston air compressor, oil screw air compressor (screw air compressor is divided into twin-screw air compressor and single-screw air compressor), centrifugal compressor, vane air compressor and scroll air compressor (scroll air compressor is divided into oil scroll air compressor and oil-free scroll air compressor).

Oil piston is mainly used in tire air filling. There are three kinds of air compressors: oil screw and scroll. The nitrogen filling of tires requires high purity of nitrogen. In order to give full play to the advantages of nitrogen filling of tires, the oil-free scroll air compressor is the most suitable for tire nitrogen filling machine. Because the gas produced by two compression mechanisms, oil piston and oil screw, contains oil and moisture, which easily oxidizes rubber and affects the service life of tires. Even if the device has the function of removing oil and water, it is very troublesome to maintain. It may even be damaged due to improper maintenance.

The oil-free scroll nitrogen charging machine adopts an oil-free scroll air compressor. The compression chamber of the main engine does not contain any grease, and the compressed gas is clean and pollution-free, with simple structure and extremely low maintenance cost. It only needs normal cleaning and air filtration. The oil-free scroll air compressor is the most advanced nitrogen making machine in the world.